Law Enforcement Agencies in Adelphia, NJ NJ › Monmouth County Agencies serving the city of Adelphia in NJ. Agency Types in Adelphia County Jails 1 agencies Municipal Police 2 agencies Sheriff 1 agencies All Agencies in Adelphia, NJ Freehold Borough Police Department Monmouth County Freehold Twp Police Department Monmouth County Monmouth County Correctional Monmouth County Monmouth County Sheriffs Office Monmouth County
